Chantakan Thongplaw. (1999) Salt iodization in Thailand and factors affecting quality of iodized salt. Mahidol University,:ม.ป.ท.Chantakan Thongplaw. 1999. Salt iodization in Thailand and factors affecting quality of iodized salt. ม.ป.ท.:Mahidol University,;Chantakan Thongplaw. Salt iodization in Thailand and factors affecting quality of iodized salt. ม.ป.ท.:Mahidol University, 1999. Print.